So I’ve know this guy on and off for 5 years, we got together properly around 2 years go up until we split last July, he was msg he ex he previously went out with before me they was together 7 mth no kids no ties he txt her behind my back and all the way though as I found msg, when he said he didn’t have contact I seen he asked her to meet up go for food and other varies overly friendly chats, then we split I found out then he seen her twice and then he wanted to get Bach with me we did stupidly and it’s been bad ever since all’ we do is argue over it, we split up then back together I don’t trust the guy one bit with what he did it was after 2 years when he met her again what’s to say he won’t do this again to me, he’s always been same to msg other woman but the msg was he wanted a relationship with her she said no and he came back to me, I didn’t know all of this in till she sent me the txts he had sent he was saying he thought they would be good together and he loves spending time with her and he wanted it to progress she’s didn’t want too she told him she didn’t want a relationship sorry long post juys want advice did he just make a mistake like he said and regrets it and said he woudlnt of done it or is it a case she didn’t want him so he’s coming back to me